This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

This 13th century castle is chock full of ghosts and impossibly rare cows.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A 19th century family buried their dead among the pines, beneath gravestones styled after ancient Scottish cairns.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

Rippling sand dunes frozen in the Arizona rock.

The final resting place of the world's first nuclear reactor.

The oldest stone house in Paris was built by its most famous alchemist.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.